6234 bearing
170 × 310 mm · dynamic rating 212 kN · static rating 224 kN. Dimensions, load ratings, designation meaning, life estimates and equivalent parts.
6234 specification
| Designation | 6234 |
| Type | Deep groove ball bearing |
| Series | 62 light |
| Bore diameter d | 170 mm |
| Outside diameter D | 310 mm |
| Basic dynamic load rating C | 212 kN (212,000 N) |
| Basic static load rating C0 | 224 kN (224,000 N) |
| Ratio C0/C | 1.06 |
| Speed guide, grease lubrication | 2,800 rpm |
| Life exponent p | 3 (ball bearing) |
Values come from the Rotec AI bearing catalogue and are indicative. Confirm against the manufacturer's current catalogue before ordering. Not every dimension (such as width) is listed here.
What the designation 6234 means
| Code | Meaning |
|---|---|
| 62 | Deep groove ball bearing, light dimension series |
| 34 | bore code "34" = 34 × 5 = 170 mm |
Basic rating life of the 6234
Basic rating life is L10 = (C / P)p million revolutions, where P is the equivalent dynamic load and p = 3 (ball bearing). For a 6234 with C = 212 kN, the table shows what that gives at different load levels. It is the ISO 281 basic life only: it does not include lubrication, contamination, misalignment or reliability modifiers.
| C / P | P as share of C | L10 (million rev) | L10 at 1,500 rpm | L10 at 3,000 rpm |
|---|---|---|---|---|
| 3 | 33.3% | 27 | 300 | 150 |
| 5 | 20.0% | 125 | 1,400 | 690 |
| 8 | 12.5% | 512 | 5,700 | 2,800 |
| 12 | 8.3% | 1,728 | 19,200 | 9,600 |
For example, a C / P of 5 means the equivalent load is 42.4 kN on this bearing. Use the Load Calculator to work out P for your actual radial and axial loads.
Equivalents of the 6234 from other brands
These parts share the main boundary dimensions of the 6234 and are commonly used as its equivalent. Published load ratings differ a little between makers because internal designs differ.
| Brand | Part | C (kN) | C0 (kN) | Dynamic rating vs SKF |
|---|---|---|---|---|
| SKF | 6234 | 212 | 224 | Reference |
| Timken | 6234 | 212 | 223 | 100% of SKF |
Check clearance class, cage, seals and any special suffix before ordering. A matching main size does not guarantee the parts are interchangeable in every detail.
Where the 6234 is used
Deep-groove ball bearings are chosen for: Radial load with moderate axial load; high-speed compact equipment. Typical equipment: Motors, fans, pumps, gearboxes, auxiliaries. Single/multi-row; insulated or stainless variants available.
Other sizes in the same series
The 6234 belongs to the “62 light” series. The next size down, the 6232, has a bore of 160 mm and a dynamic rating of 186 kN. The next size up, the 6236, has a bore of 180 mm and a rating of 229 kN (+8%).
Common problems on bearings like the 6234
Most field failures trace back to lubrication, contamination, fits and alignment rather than the bearing itself. These guides explain how to recognise and prevent them:
Questions about the 6234
What are the dimensions of a 6234 bearing?
The 6234 has a bore of 170 mm and an outside diameter of 310 mm. It is a deep groove ball bearing. Series: 62 light.
What is the load rating of a 6234 bearing?
In the Rotec AI catalogue the 6234 has a basic dynamic load rating C of 212 kN and a basic static load rating C0 of 224 kN. Always confirm against the manufacturer's current catalogue.
What is the equivalent of a 6234 bearing?
Equivalent parts include Timken 6234. Check clearance, cage and seal suffixes before substituting.